Boston College High School senior Sean Larsen of Holbrook and freshman Aidan Kierce of Canton, both committee chairmen in BC High’s Model UN Club, were two of BC High’s 55 students who organized and hosted BC High’s 29th Model UN Conference on its campus in Dorchester.

The Model UN Club welcomed 484 participants from 38 schools. Jared Owen of the Massachusetts Office of Addiction Recovery, the keynote speaker, presented sobering data about the opioid epidemic in Massachusetts. BC High Principal Stephen Hughes addressed the conference, and seniors Patrick Walsh and Gavin D’Souza shared their Model UN experiences with the attendees.